Bystanders gather at a South Philadelphia shooting and homicide scene in May. Photo by Joe Kaczmarek.

From the Philadelphia Metro:

Guns have taken over the headlines. Whether it’s the mass attack in Aurora or an almost-daily exchange of gunfire in Philadelphia, flying bullets seem to be featured in every other news story.

This is a public health issue, according to Jim MacMillan. “It’s like smoking, not using seat belts, unprotected sex,” he says — behaviors that used to be taken for granted that are now recognized as unacceptably dangerous. “Colossal changes have been made on those issues, and we can do it again,” MacMillan says.